public class Example3_5 {
	public static void main(String arg[]) {
		long sum = 0,a = 8,item = a,n = 12,i = 1;
		for (i=1;i<=n;i++) {
			sum = sum+item;
			item = item*10+a;
		}
		System.out.println(sum);
	}
}
